Gorman-Rupp Pumps PA4E71C-3TNV88-SE 1416614 and up - Manual (Page 46)

PA SERIES OM−06244
MAINTENANCE & REPAIR PAGE E − 24
PUMP AND SEAL DISASSEMBLY
AND REASSEMBLY
Review all SAFETY information in Section A.
Follow the instructions on all tags, label and de-
cals attached to the pump.
This pump requires little service due to its rugged,
minimum-maintenance design. However, if it be-
comes necessary to inspect or replace the wearing
parts, follow these instructions which are keyed to
the Sectional Views (see Figures 1 through 9) and
the corresponding Parts Lists. Maintenance and
repair instructions for the engine and air compres-
sor are covered separately in the specific literature
supplied by the manufacturers.
This manual will alert personnel to known proce-
dures which require special attention, to those
which could damage equipment, and to those
which could be dangerous to personnel. However,
this manual cannot possibly anticipate and provide
detailed precautions for every situation that might
occur during maintenance of the unit. Therefore, it
is the responsibility of the owner/maintenance per-
sonnel to ensure that only safe, established main-
tenance procedures are used, and that any proce-
dures not addressed in this manual are performed
only after establishing that neither personal safety
nor pump integrity are compromised by such prac-
tices.
Some pump service functions may be performed
without separating the pump end assembly from
the engine. However, the priming chamber (2, Fig-
ure 3) and discharge check valve assembly (1, Fig-
ure 3) must be removed to service most pump
components. The following instructions assume
complete disassembly of the pump is required.
Before attempting to service the pump, shut down
the engine and take precautions to ensure that it
will remain inoperative. Close all valves in the suc-
tion and discharge lines and drain the pump cas-
ing by removing the casing drain plug (20, Figure
5). Clean and reinstall the drain plug.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man-
ual.
2. Shut down the engine and discon-
nect the positive battery cable to
ensure that the pump will remain
inoperative.
3. Allow the pump to completely cool
if overheated.
4. Check the temperature and make
sure it is cool before opening any
covers, plates, gauges, or plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cau-
tiously.
7. Drain the pump.
This pump is designed to handle materi-
al which could cause illness through di-
rect exposure or emitted fumes. Wear
adequate protective clothing when
working on the pump or piping.
This pump is equipped with an automat-
ic starting system, and is subject to au-
tomatic restart. Keep hands and cloth-
ing away from the unit to prevent injury
during automatic operation. Disconnect
the positive battery cable before per-
forming any maintenance. Failure to do
so may result in serious personal injury.
Use only replacement parts provided or
approved by Gorman-Rupp. Use of non-